Nearly 30 years I've been here and I've never stepped on it.
Note to newcomer: the hall directly inside the Zodiac leading into the MU is engraved with Gold Star Iowa Staters. Remember that, and respect that.
If possible, arrive before classes start, take some time with a map to go locate the classrooms & lecture halls where your classes will meet. Two buildings on campus that have crappy room numbering systems are Gilman Hall (Chemistry) and Agronomy Hall (self-explanatory). There may be others. It's not enough to just find the buildings. FIND THE ROOMS INSIDE THE BUILDINGS!!!!